That hoary proverb about charity beginning at home would appear to be the inspiration for shorts director Tinge Krishnan's murky debut feature, "Junkhearts."

That hoary proverb about charity beginning at home would appear to be the inspiration for shorts director Tinge Krishnan’s murky debut feature, “Junkhearts.” But the moral of this structurally addled urban drama could be summed up more simply: It’s generally not a good idea to let homeless addicts move into your apartment. Youth violence, post-Iraq trauma and the class ladder are among the floating concerns of Simon Frank’s alarmist script, but the compressed, splintered narrative offers no room to explore any one of them coherently. Presence of Eddie Marsan and Romola Garai as headliners won’t be enough to attract eyeballs outside the U.K.